Understanding hadron structure using lattice QCD

Numerical evaluation of the path integral for QCD on a discrete space-time lattice has been used to calculate ground state matrix elements specifying moments of quark density and spin distributions. This talk will explain how these matrix elements have been calculated in full QCD using dynamical quarks, show how physical extrapolation to the chiral limit including the physics of the pion cloud resolves previous apparent conflicts with experiment, and describe the computational resources required for a definitive comparison with experiment.

talk: Trieste 2001/05/07
fermion: lattice field theory
gauge field theory: SU(3)
path integral
p: ground state
quark: density
spin: moment
symmetry: chiral
operator: lattice
operator product expansion

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